An Offshore saltwater fishing map. Map F131 covers areas of the Gulf of Mexico east of Galveston, Freeport, Port O'Connor, and Port Aransas. There are many surface platforms, wells, sunken wrecks, artificial reefs and underwater structure that provide good fishing for all kinds fish species. The map also details oil lease blocks and course lines. The map has tables listing GPS numbers for fishing spots, lease blocks, marinas and other locations of interest.